Harrison Hartle

A Brownian motion is approximation by a discrete random walk with Gaussian increments. en.wikipedia.org/wiki/Brownian_…

Chaos: Identifying edges that facilitate the generation of extreme events in networked dynamical systems aip.scitation.org/doi/10.1063/5.…

The heat equation can be applied to diffuse probability densities (in particular, maintains positivity and unit mass). Its solution is obtained as the convolution of the initial condition with a Gaussian. en.wikipedia.org/wiki/Heat_equa…

Role of the forcing dimensionality in thin-layer turbulent energy cascades j.mp/3fH95ZT via @PhysRevFluids

Node percolation for networks: A C-implementation + Python wrapper of Newman & Ziff's algorithm github.com/pholme/perc

The shape of memory in temporal networks. (arXiv:2004.12784v1 [physics.soc-ph]) arxiv.org/abs/2004.12784

Wind data can be challenging to access and analyze. With the new ACCAP & SNAP Community Wind Tool you can see historical and projected wind data across the state with accessible visualizations and graphs. Take a look! windtool.accap.uaf.edu

"Epidemics with containment measures" in collaboration with P. L. Krapivsky is now in the arxiv. Check it out to have a theoretical understanding of the role of containment measures! arxiv.org/abs/2004.03934

Phys. Rev. Research: Small worlds and clustering in spatial networks link.aps.org/doi/10.1103/Ph…

Long-term prediction of chaotic systems with machine learning, Huawei Fan, Junjie Jiang, Chun Zhang, Xingang Wang, and Ying-Cheng Lai #machinelearning #complexsystems #nonlineardynamics go.aps.org/2QVckmk

I’m excited to announce that the preprint of my first paper on the application of machine learning for global weather prediction is now available online! (essoar.org/doi/10.1002/es…)

If anyone has large memory requirements for COVID-19 simulation work, get in touch. We have 3TB nodes that could be made available. @nextgenio #hpc #COVID19

Our work on the similarities between interacting contagions and socially driven contagion, @LHDnets @svscarpino . Featuring a @mcmc_stan model of interacting contagions!

The origin of life as a planetary phenomenon advances.sciencemag.org/cgi/content/sh…

This is Internet in 1973. 45 computers connected to 40 nodes: the entire Internet buff.ly/2hMZXFa

Global scaling of the heat transport in fusion plasmas, Sara Moradi et al. #plasma #fusion go.aps.org/2T3oziM

The second edition of our book "Predictability of Chaotic Dynamics. A Finite-time Lyapunov Exponents Approach" by Juan C. Vallejo and Miguel A.F. Sanjuan has appeared. springer.com/gp/book/978303…

My new paper: "Nonlinearity + Networks: A 2020 Vision": arxiv.org/abs/1911.03805 "I highlight a few methods and ideas, including several of personal interest, that I anticipate to be especially important during the next several years." Can you find all of the easter eggs in it?

We are getting closer and closer to our goal of realizing #swarmalators in drones. First demo will be on Dec 10. Work by Agata Barciś with help of her fellow students in our Popper PhD school under my supervision. Swarmalators were proposed by @kevsational, Hong, @stevenstrogatz.

Students taking a first course in nonlinear dynamics and chaos: My videotaped lectures are freely available on @YouTube here. Hope you find them useful. Prerequisites are elementary calculus and physics, and a little linear algebra. youtube.com/playlist?list=… via @YouTube